If \(\rm A = \begin{bmatrix} \rm x &\rm y & \rm z\\ \rm y& \rm z & \rm x \\ \rm z& \rm x& \rm y \end{bmatrix}\)then cofactor of a23 is 

1
xz - y2
2
x2 - yz
3
yz - x2
4
xy - z2

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